A rectangle has its longer side 2 cm greater than its shorter side. Its area is 80 cm². Find the perimeter of the rectangle (in cm).

36

Short side = S

Long side = L

L = S+2

Area = L*S = (S+2)*S = S² + 2S = 80

S² + 2S - 80 = 0

S² + 10S - 8S - 80 = 0

S(S+10)-8(S+10) = 0

S = 8

L = 10

Perimeter = 2*(10+8) = 36

The correct answer is Option (3) → 36